Idol of False Gods
From Modern Horizons 3 set
Idol of False Gods
Kindred Artifact — Eldrazi
,
: Create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add
."
Whenever another Eldrazi you control dies, put a +1/+1 counter on this artifact.
As long as this artifact has eight or more +1/+1 counters on it, it's a 0/0 creature in addition to its other types and it has annihilator 2.